GridinSoft Threat Intelligence

drfec.sys file report

Under review File reputation report
MD5 657d2a1e37b78c531739f52ba6093949
Latest seen 2023-04-02 23:09:46 (3 years ago)
First seen 2023-04-02 23:09:46 (3 years ago)
Size 40 KB
Publisher Dynabook Inc.
Product dynabook Bluetooth ACPI Control Driver
Signed by Dynabook Inc.;Microsoft Windows Hardware Compatibility Publisher

Why it matters

Evidence available for this file

Detection

No final classification is available yet.

Timeline

First seen 2023-04-02 23:09:46 (3 years ago); latest analysis 2023-04-02 23:09:46 (3 years ago).

Publisher context

Company metadata: Dynabook Inc.. Product metadata: dynabook Bluetooth ACPI Control Driver.

Digital signature

Signed by Dynabook Inc.;Microsoft Windows Hardware Compatibility Publisher. The signature is reported as valid, but signed files can still be bundled or abused.

Observed locations

ThreatInfo has seen this file in user or system paths listed below. Unexpected locations increase the need for local verification.

Recommended action

What to do next

  1. Use the hash and metadata below to verify the exact file identity.
  2. Review publisher, signature, paths, and PE details for inconsistencies.
  3. Run a local scan if the file appears unexpectedly or starts with Windows.

File context

drfec.sys is a Windows file recorded in the ThreatInfo database. It is associated with dynabook Bluetooth ACPI Control Driver. The reported company name is Dynabook Inc.. The current detection status is Undefined, based on the latest analysis from 2023-04-02 23:09:46 (3 years ago).

ThreatInfo does not have a final classification for this file yet. Use the technical details below to compare the hash, size, signature, and observed locations with the copy found on your device.

File Details

Product Name: dynabook Bluetooth ACPI Control Driver
Company Name: Dynabook Inc.
MD5: 657d2a1e37b78c531739f52ba6093949
Size: 40 KB
First Published: 2023-04-02 23:09:46 (3 years ago)
Latest Published: 2023-04-02 23:09:46 (3 years ago)
Status: Undefined (on last analysis)
Analysis Date: 2023-04-02 23:09:46 (3 years ago)

Overview

Signed By: Dynabook Inc.;Microsoft Windows Hardware Compatibility Publisher
Status: Valid

The signature on drfec.sys is reported as valid. A valid signature helps confirm publisher identity, but it does not automatically make the file safe if the installer was bundled, abused, or downloaded from an untrusted source.

Common Places:

%commonappdata%\outbyte\driver updater\2.x\temp

ThreatInfo has observed drfec.sys in the locations listed above. Files found in temporary folders, user profile folders, startup locations, or unusual application directories should be reviewed more carefully than files installed under a known program directory.

Geographic signal

Observed country distribution

ThreatInfo has seen drfec.sys across 1 countries. Use this signal to compare local evidence with where the sample is most often reported.

Top country Hungary
Share 100.0%
Low High activity

The strongest geographic signal for this file is Hungary with 100.0% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.

OS Version:

Windows 10 100.0%

The most common operating system signal for drfec.sys is Windows 10 with 100.0% of observed hits. If your system differs from the common profile, check whether the file was introduced by a specific installer, archive, or removable device.

Analysis

drfec.sys is identified as pe for 64-bit systems. The subsystem is Native. PE header values are useful for triage, especially when they do not match the expected publisher, product, or release timeline.

Format pe
Architecture 64-bit
Subsystem Native
Entry point 0x00008280
Image base 0x0000000140000000

PE Sections:

Sections 8
Raw data 20992

Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.

.text 10240 bytes · 48.8% of section data
MD5 5d0c7112554d31ef8c713c3d852bbee2
.rdata 2560 bytes · 12.2% of section data
MD5 e0701e91580611769b0a2dbebdac3e7e
.data 512 bytes · 2.4% of section data
MD5 04aa460ca1d6a6a1dd41cbf628b66f62
.pdata 1024 bytes · 4.9% of section data
MD5 278c05896977c07108118b4ad23c21fc
PAGE 1536 bytes · 7.3% of section data
Uncommon name
MD5 93f672409b56e34874b7739199135c5f
INIT 3072 bytes · 14.6% of section data
Uncommon name
MD5 3f4a7d5e118ffa9fc059d92d88931659
.rsrc 1536 bytes · 7.3% of section data
MD5 4f7eacd450a0c9099d75a89ff2a0b24f
.reloc 512 bytes · 2.4% of section data
MD5 c4dcf0b5218fcedd3954f34ce4ccd687

PE section names and hashes can reveal packing, injected resources, or unusual build artifacts. Sections with uncommon names, very large raw data, or hashes that differ from a trusted copy deserve additional review.

Report conclusion

This file is still under review

ThreatInfo has not assigned a final verdict yet. Compare the file hash, location, signature, and publisher before trusting the file on a production system.

Scan with GridinSoft Anti-Malware Use a local scan if the file origin or behavior is unclear. Check this hash on VirusTotal

Recommended next steps

  • Compare the local file MD5 with 657d2a1e37b78c531739f52ba6093949.
  • Check the file path, publisher, and signature against the details in this report.
  • Run a GridinSoft scan if the source, path, or behavior looks unusual.